Android课程设计第四天ListView运用

注意：课程设计只为完成任务，不做细节描述~ 

效果图

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"

    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".MainActivity">
    <ListView
        android:id="@+id/listview"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:text="asad"
        >
    </ListView>

</RelativeLayout>

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent">
    <ImageView
        android:layout_width="80dp"
        android:layout_height="80dp"
        android:id="@+id/img_ico"
        android:src="@mipmap/x2017612"/>
    <TextView
        android:layout_width="match_parent"
        android:layout_height="50dp"
        android:id="@+id/text1"
        android:layout_toRightOf="@id/img_ico"
        android:text="miemie"
        android:textSize="16sp"
        android:textColor="#0ccfff"/>
    <TextView

        android:layout_width="match_parent"
        android:layout_height="40dp"
        android:id="@+id/text2"
        android:layout_below="@id/text1"
        android:layout_alignLeft="@id/text1"
        android:text="xxxxx"
        android:textSize="16sp"
        android:textColor="#0ccfff"
        />
</RelativeLayout>

package com.example.myapplication;

import android.content.Context;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.ImageView;
import android.widget.TextView;

/**
 * Created by 樱花落舞 on 2017/6/12.
 */

public class MyAdapter extends BaseAdapter {
    private String names[], contents[];
    private int images[];
    //上下文
    private Context context;

    public MyAdapter(String names[], String contents[], int images[],Context context) {
        this.names = names;
        this.contents = contents;
        this.images = images;
        this.context=context;
    }

    //获取列表总数
    @Override
    public int getCount() {
        return names.length;
    }

    //获取单个item
    @Override
    public Object getItem(int position) {
        return names[position];
    }

    //获取itemid
    @Override
    public long getItemId(int position) {
        return position;
    }

    //得到item视图
    @Override
    public View getView(int position, View convertView, ViewGroup parent) {
        View view = LayoutInflater.from(context).inflate(R.layout.item,null);
        ImageView image = (ImageView) view.findViewById(R.id.img_ico);
        TextView name = (TextView) view.findViewById(R.id.text1);
        TextView content = (TextView) view.findViewById(R.id.text2);

        image.setImageResource(images[position]);
        name.setText(names[position]);
        content.setText(contents[position]);

        return view;
    }
}

package com.example.myapplication;

import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.widget.ArrayAdapter;
import android.widget.ListView;
/*
    listview的使用
        在布局中准备控件
        在java代码中声明实例化
        准备数据源
        创建适配器
        加载适配器

 */
public class MainActivity extends AppCompatActivity {
    //声明控件
    private ListView listView;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        listView= (ListView) findViewById(R.id.listview);
     
        String names[]={"xh","xhh","xhhh","xhhhh"};
        String contents[]={"Max","max","min","Min"};
        int images[]={R.mipmap.a,R.mipmap.b,R.mipmap.c,R.mipmap.d};
        MyAdapter adapter =new MyAdapter(names,contents,images,MainActivity.this);
        listView.setAdapter(adapter);
    }
}